integer-range-extension-in-dart.dart

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import 'dart:developer' as devtools show log;

extension Log on Object {
  void log() => devtools.log(toString());
}

extension To on int {
  Iterable<int> to(int other, [bool inclusive = true]) => other > this
      ? [for (int i = this; i < other; i++) i, if (inclusive) other]
      : [for (int i = this; i > other; i--) i, if (inclusive) other];
}

void testIt() {
  // (1, 2, 3, 4, 5, 6, 7, 8, 9, 10)
  1.to(10).log();
  // (1, 2, 3, 4, 5, 6, 7, 8, 9)
  1.to(10, false).log();
  // [10, 9, 8, 7, 6, 5, 4, 3, 2, 1]
  10.to(1).log();
  // [10, 9, 8, 7, 6, 5, 4, 3, 2]
  10.to(1, false).log();
}